ALiBi position bias
ALiBi (Fàttaliku ak Bias Lineer) anam wu am xel la wu ñuy jox transformatër yi ñu xam ni ñuy doxalee ci kàddu yi te duñu def benn position buñ miin.
Résumé
It lets a model trained on short text handle much longer inputs at inference time.
Plongeur bu xóot
Transformatër yi amul benn gis-gis buñ tabax ci seen biir ci njubluwaayi baat yi, moo tax dañu soxla anam wu ñuy kodee position bi. Xeetu jëfandikoo bu yàgg bi dafay yokk ay position ci vecteur token yi. ALiBi, bi Press, Smith ak Lewis dugal ci 2021, dafa sànni lépp. Lu moy loolu, dafay gëna xëcc poñ yi ci saasi: su token laajte xoolee token bu am solo, ALiBi dafay dindi penalti bu méngoo ak diggante bi ci seen biir. Token yi sori seen biir dañuy am penalti bu gëna rëy, moo tax model bi dafay taamu contexte bu jege. Boppu attention bu nekk amna pente penalti boppam, moo tax yenn bopp yi dañuy xool ci barab bi ñeneen ñi di xool fu sori. Ndax bias bi nekkul ludul fonction distance, ALiBi dafay extrapoler ci anam wu rafet ci toppalante yu gëna gudd yi ñuy gis ci tàggat yaram.
Gis-gis xarala
Ngir laaj bu nekk ci barab i ak caabi ci barab j, ALiBi dafay yokk m * (j - i) ci poñ yiñ joxe ci softmax, fu m nekk constant bu jëm ci bopp (pente yi dañuy forme benn rang geometrik bu melni 1/2, 1/4, 1/8). Ndax j moo gëna ndaw wala mu tollu ci i ci bàyyi xel ci sabab, term bii amul dara wala negatif, di yar token yu sori. Amul benn parametre buñu jàng wala benn embedding buñu yokk ci, kon lenn liñu ciy yokk mooy matrix bias biñ njëkka xayma.
njeextalu pexe
Gaawaay ak yaatuwaay
Liggéeyukaay yi ci làkk yi mën nañu gëna gaaw te duñu yàq deggoo gi.
Dugg ak yegg
Dafay yaatal jëfandikoo gi ci làkk yi ak ci anam yi ñuy jokkoo.
dogal yu gëna leer
Ekip yi mën nañu gëna yàgg ci àtte ci jamono ji otomatisation di liggéey ci baamtu.
Ëlëgu position ALiBi
ALiBi dafa firndeel ni biais relatif yi, distance yi ñoo raw position absolu yi ngir yamale guddaay bi, te xalaat boobu mingi dugg ci konseptioŋ bu guddu bi leegi. Yenn xeetu model yu bees yi dañu bëgg embeddings rotary (RoPE), waaye ALiBi mingi wéy di siiw ci barab yu extrapolation yu tar yi am solo, ñu jëfandikoo ko ci xeetu model yu melni BLOOM ak MPT. Xaarandil wéyal jàngat hybrid, boole ay njuumte ci distance ak RoPE scaling, ginnàaw bi laboratuwaar yi di puus palanteer yi ci ay milioŋ ciy token te duñu tàggataat ci noonu.
Doxal ci àdduna dëgg
Taggat chatbot ci misaali 1,024-token waaye dugal ko ci këyitu 4,096-token te doo tàggataat, di wéeru ci extrapolation ALiBi.
BLOOM 176B xeetu lakk yu bari, bi jël ALiBi ngir jëfandikoo posisioŋ yi.
Modèle MPT yu MosaicML, yu jëfandikoo ALiBi ngir siiwal guddaayi contexte bu amul àpp ci inference.
Résumé ay kontraa legal yu gudd yu weesu guddaayu tàggat yaram bu njëkk bi, fu jege-context biais tëye bàyyi xel ci coherent.
Risk yi ak balustrade yi
Lépp lu jaarul yoon mën na dugg ci rapoor yi, jàppale ci liggéey bi, wala ci njariñu gëstu bi.
Sensibilite bu gaaw mën na jur njariñ yu wuute ci laajte yu noonu mel.
Done yu am solo mën nañu feeñ sudee seytu jëfandikoo gi néew doole.
Roadmap ngir samp gi
Mandargal formaa génne gi, melokaan bi, ak standard kalite yi laata ngay dugal ko.
Tontu yu am solo ak balluwaay yu wóor saa yu dëggu bi di am solo.
Fexeel am barabu xool nit ñi ngir am njariñ yu am solo.
Toppal anami gacce yi ak di faral di tàggataat ay laaj wala def-liggéey.
Weyal di banneexu
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Gis bi ci topp
Interpolaasioŋu posisioŋ ngir yokk ëmbiit li
Laaj yi ñuy faral di laaj
What is ALiBi Position Bias?
ALiBi (Fàttaliku ak Bias Lineer) anam wu am xel la wu ñuy jox transformatër yi ñu xam ni ñuy doxalee ci kàddu yi te duñu def benn position buñ miin. Dafay may ab model buñu tàggat ci bind bu gàtt mu mëna jëfandikoo ay dugal yu gëna gudd ci diiru inference.
Luy ALiBi?
ALiBi mooy lu gàtt ci Fexe ak Bias Lineer, ñu tuddee ko penalti ligneer bi muy yokk ci poñ yi ñuy joxe.
naka la ALiBi di yar ay token yu sori?
ALiBi dafay dindi benn valeur bu méngoo ak distance query-key ci poñ yi ñuy bàyyi xel, suko defee token yu gëna sori di gëna néew poid.
Lan mooy njariñu jëfandikoo gi gëna mag ci ALiBi?
Ndax bias bi mingi aju ci distance bi, model yiñ tàggat ci sequence yu gàtt mën nañu jëflante ak yu gëna gudd ci diiru inference.
Lan moo wuutale ligneer bias ci boppu attention yi?
ALiBi dafay jox bopp bu nekk benn pente bu amul benn werante (lu melni, 1/2, 1/4, 1/8), kon bopp yu wuute dañuy jaar ci ay rang yu wuute.
Buñu ko méngale ak position yiñ gëna xam, ALiBi dafay yokk ñaata paramet yuñ jàng?
ALiBi du dugal benn paramet bu bees buñu jàng; pente yi ci bopp bu nekk dañuy nekk constant yuñ tànn bu njëkk.